The Del Air Rockhounds Club, Inc
Los Angeles - San Fernando Valley, California, United States
- We are a non-profit organization dedicated to sharing knowledge of the lapidary arts and techniques, geology, mineralogy and related fields.

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Thursday, October 23, 2008

November 2008 Mineral of the Month: MALACHITE

Hello All Del-Airs and Interested Guests!

Welcome to the online version of our November 2008 Mineral of the Month:

MALACHITE

Malachite is a green mineral with a widely variable habit. Typically it is found as crystalline aggregates or crusts, often banded in appearance, like agates. It is also often found as botryoidal clusters of radiating crystals and as stalactitic aggregates as well. Single crystals and clusters of distinguishable crystals are very uncommon, but when found, they are typically acicular to prismatic. It is found in the oxidized regions of copper deposits. It is also frequently found as a pseudomorph after Azurite crystals.It's chemical properities are as follows: